Weft cutter on multishuttle box looms



July 13, 1948. c FloRlNA 2,445,024

WEFT CUTTER ON MULTISHUTTLE BOX LOOMS Filed Jan. 25, 1945 2 Sheets-Sheet1 INVENTOR, Chum Fioflflw,

BY M d I ATTORNEY.

July 13, 1948. CQFIORINA 2,445,024

WEF'T CUTTER ON MULTISHUTTLE BoX LOOMS Filed Jan. 25, 1945 I 2Sheets-Sheet 2 INVENTOR, C h a rle's' Fz'ar zIYLa/ A TTORNEK ward strokeof the batten the dagger is allowed by the feeler to fall to clear saidnotch, but if such filling is absent the dagger is lifted and engagesthe notch to effect stopping of the loom. What has so far been describedis conventional in looms of the type first herelnbefore referred toadapted for weaving withthe use of catchcords as b, and with the use ofa-plurality of shuttles and having a filling stop-motion means.

As the weaving proceeds the shuttles go into action as determined bythe'means controlling the vibrator levers 23here alternately because inthis example there are only two shuttles shown, though the number ofshuttles. partaking in the weaving is not material so. long as there areat least two. If the filling from either shuttle fails,. as by beingexhausted, the weft stop-motion means will stop the loom on'the ensuingflight of the shuttle. It will be'understood that since the catch-cord bis subject to shedding the sameas the warp proper the fillingbecomes'trained around it to form what is in effect a selvage.

Now my invention is particularly related to the weaving ofrepeatedpatterns in each of which,

a plurality of shuttles being used to develop each pattern, one shuttlecontinues in action'while the warp-is being advanced through a maximumdistance whereby that shuttle lays filling in the warp sheds to form awoven zone of maximum Width, which I term the wider zone.

The continuous filling so laid through the sheds I term the primaryfilling. What I term the primary zones thus formed will in the finishedpiece be spaced from each other, and have (extending from-one to theother margin of .the piece) their final filling stretches all equallyspaced apart.

' In the space between each .two such zones another shuttle or shuttlesgo into action, perhaps, also, together with the first-named shuttle;each to lay continuous secondary filling in thesheds for the forming ofanother or other zones, which I term the narrower zone, and which has awidth less than that of the wider zone; a

So much of the iloomas includes the shuttles (here only two), thepicker-stick,'box-set and the means for shifting the latter to bring agiven shuttle in linewith the lay .I treat as .m eans,

while the warp is advanced at constant rate and subjected to shedding,for performing two functions, to wit, (1) laying continuous ,filling d-through the warp sheds :to form with the warp, :spaced from each otherlengthwise of-the warp, "woven primary zones 14' all having their final:stretches equally spaced'apart and (Z) 1aying continuous fillingthrough the shedsinthe spaces a: between said zones to form other andnarrower woven zones.

Now, in bearings 30 on structure l is journaled a shaft 3! geared .at'32 with thegearing 5 so as to be rotated clockwise asviewed from theright in Fig. 2.. This shaft-has 'f astithereon a disk-shaped cutter 33having it-speriphery as its cutting edge, it being arranged in aplanebetween the catch-cord b and the'adjoiningwarpproper a andprojecting through the plane of the .intervening filling; since thereare here shown two groups of warps proper there is a similar cutter 33don. the shaft'similarly l-ocated with respect to, such groups, Asthesevering proceeds As for the cutters 33a which sever between thegroups of warp proper the same might be placed anywhere lengthwise ofthe already woven area, but this is not true of cutter 33 which seversbetween the catch-cord and adjoining warp proper. Thus account must betaken of the circumstance that cutter 33 may be active to sever thefilling extending from such a shuttle, as 12, Fig. 2, which is inactive,or remaining boxed, while the other shuttle is active, with theconsequence that when the former shuttle again goes into action the weftstop-motion would cause stopping of the loom because its severed fillingwould not depress the feeler.

-H-ence, according to my invention I position the cutters (especiallycutter 33) completely forward of the last wider zone adjacent the fellwhich has just been completely woven. The final filllngstretches of thezones 3/ being all equally spaced apart it follows that, with the cutter33 so positioned, such cutter cannot sever until the filling fromshuttle 12 has first been more or less laid in the warp sheds and so haspassed the feeler and held it depressed. The cutter is here so farforward as to be below the breast-beam, but I do not wish thus to belimited. In the spaces '1 thefzones woven or left unwoven are wider-thanthe zonesm'.

Said haft for the cutters; is preferably arranged below the breast-beam,between it and j th-e-sand-roller, being forward of the depending partof the piece. Sinice the cutters rotate clockwise (viewed from theright, Fig. 2), or so that their peripheral portionswhich are betweenthe shaft and the warp move generally in thesame direction as thelatter, and of course-at a different speed, the fillingisassuredlysevered, especially in view of the following: A guide 34 isattachedto and depends from the breast-beam back of and so as to bewiped by the piece and it is sli tted at 34a to accommodate, the,corresponding cutter.

That one of saidguides which cooperates with the cutter 33 has one armthereof, i. e., the arm 34!) adjoining the catch-cord, bent forwardlythus to form an abutment suit-ably spaced from the cutter. Although thewarp is of course advanced under tension by what I term oing mean-sShuttle .12 provides the filling c for the woven zones :2: andshuttle I3prowides the fillingd to form the woven zones in the spaces-y.

comprising the take-up and let off means, the catch-cord, under thetension of the filling, usually bows, inwardly to an extent which, intheabsence ofsaid abutment, would result (as con- 'forrepeatedly formingsheds ,in the vwarp, during advance. thereof, means ,to lay continuousthese-cutters sever the filling as they rotate thus t form airings oneachband-offabric-developed.

primary filling through the sheds and form with the. warp, spaced fromeach other lengthwise of the warp, woven wider'zones allhavingthe'irfinal filling stretches equally spaced apart byspacesnarrower than said zones, means tolay continuous secondary fillingthrough the sheds in the spaces between said wider; zones and form othernarrower woven zones, means-to indicate filling failure each timefilling is laid through a shed, and a cutter on said structure arrangedto sever the filling portions connecting the warp proper and auxiliarywarp element, said cutter being positioned completely forward of thelast wider zone adjacent the fell, which has just been completely woven,a sufficient distance so that the filling from the second named fillinglaying means remains intact until said last named means has laid atleast the initial filling through the sheds forming a part of the nextsucceeding narrower zone.

2. A loom including supporting structure, means to advance, at constantrate and in synchrony, groups of warp proper paralleling and spaced fromeach other and a flexible auxiliary element spaced from and parallelingthe relatively outer margin of one such group, such groups and elementforming the warp f the fabric to be woven, means for repeatedly formingsheds in the warp during advance thereof, means to lay continuousprimary filling through the sheds and form with the warp, spaced fromeach other lengthwise of the warp, Woven wider zones all having theirfinal filling stretches equally spaced apart, means to lay continuoussecondary filling through the sheds in the spaces between said widerzones and form other narrower woven zones, means to indicate fillingfailure each time fillin is laid through a shed, a shaft supported bysaid structure and extending transversely of the warp, and cutters onthe shaft respectively arranged to sever the filling between said groupsand between said element and the adjoining group, said shaft and cuttersbeing positioned completely forward of the last group of wider zonesadjacent the fell, which has just been completely woven, a suificientdistance so that the filling from the second named filling laying meansremains intact until said last named means has laid at least the initialfilling through the sheds forming a part of the next succeeding narrowerzone.

3. In a loom, the combination of supporting structure including abreast-beam, a rotary shaft journaled in said structure below andparallel with .the breast-beam and having in fast relation to itself acutter having a peripheral cutting edge and projecting through the planeof the warp extending over the breast-beam and downwardly, and a guidefor the warp depending from the breast-beam at .the breast-beam side ofthe wa p and having a slit receiving the peripheral portion of thecutter.

4. In a loom, the combination of supporting structure having abreast-beam, going means in said structure including means for advancingunder tension warp having filling interwoven therewith, a rotary shaftjournaled in said structure below and parallel with the breast-beam andhaving in fast relation to itself a cutter having a peripheral cuttingedge and projecting through the plane of the warp extending from thebreastbeam downwardly, means, driven by said going means, to rotate saidshaft in the direction in which that peripheral portion of the cutterwhich adjoins the warp moves downwardly, and a guide for the war-pdepending from .the breast-beam rearward of the warp and having a slitreceiving the peripheral portion of the cutter.

5. In a loom, the combination of supporting structure, means therein foradvancing under tension a warp proper and a flexible auxiliary warpelement paralleling and spaced from a margin of the warp proper, saidWarp proper having filling interwoven therewith and trained around saidelement, severing means on said structure including a cutter projectinginto the path of the art of the filling between the warp proper and saidelement, and means on said structure wiped by said element and holdingthe same clear of the cutter.

CHARLES LFIORINA.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 868,688 Naylor Oct. 22, 19071,872,979 Kronoff Aug. 23, 1932 1,970,365 Dudley Aug. 14, 1934 FOREIGNPATENTS Number Country Date 597 Austria Nov. 25, 1899 109,312 GermanyMar. 22, 1900 176,722 Great Britain Feb. 16, 1922 740,926 France Nov.22, 1932

